The gap between a supercomputer’s theoretical maximum ("peak") floating-point performance and that actually achieved by applications has grown wider over time. Today, a typical scientific application achieves only 5-20% of any given machine’s peak processing capability, and this gap leaves …
May 21, 2013 by hgpu
With the introduction of GPGPUs, parallel programming has become simple and affordable. APIs such as NVIDIA’s CUDA have attracted many programmers to port their applications to GPGPUs. But writing CUDA codes still remains a challenging task. Moreover, the vast repositories …
August 2, 2012 by hgpu
Numerical solution models to Maxwell’s equations, which describe electromagnetic wave propagation phenomenon with complete clarity, are of atmost importance in pre-fabrication simulation analyses of the photonic and optoelectronic devices. The Finite Difference Time Domain (FDTD) method, which is based on …
July 13, 2012 by hgpu
Concern about the threats posed by natural proliferation of animal-borne human diseases like BSE ("mad cow disease") and by the possible use of animals as disease vectors in bioterrorism, have spurred heightened interest in the development of methods for rapid …
May 29, 2012 by hgpu
Today every personal computer and almost every work-related computer has a GPU powerful enough to be used as a supplementary computational device. One framework which enables utilization of this is called OpenCL. We asked the question how one writes efficient …
April 19, 2012 by hgpu
In this study, we visualize Pareto-optimum solutions derived from multiple-objective optimization using spherical self-organizing maps (SOMs) that lay out SOM data in three dimensions. There have been a wide range of studies involving plane SOMs where Pareto-optimal solutions are mapped …
April 5, 2012 by hgpu
Finite difference time domain (FDTD) is a numerical method for solving differential equations like Maxwell’s equations. Normally, simulation time of these equations is very long and there has been a great effort to reduce it. The most recent and useful …
March 10, 2012 by hgpu
In this paper, we present the optimization of the particle-based volume rendering for GPU platforms. In general, data transfer between CPU and GPU accompanies long latency. Using page lock memory of the CUDA runtime API, data area is selected so …
November 30, 2011 by hgpu
The latest GPU architecture released by Nvidia, code-named "Fermi", is the most advanced computing GPU architecture ever built. Radical changes took place on the GPU computing architecture compared to Fermi’s predecessors such as the GT200 series and the G80s. In …
November 29, 2011 by hgpu
The work presented in this paper consists in an adaptation of a Genetic Algorithm (GA) to perform variable selection in an heterogeneous cluster where the nodes are themselves clusters of GPUs. Due to this heterogeneity, several mechanisms to perform a …
November 15, 2011 by hgpu
Recent GPU developments have attracted much interest in the HPC community. Since each GPU interface requires a dedicated host processor, the unused high performance non-GPU processors are simply wasted. GPUs are energy intensive and are more likely to fail than …
November 15, 2011 by hgpu
This paper presents the architecture of an heterogeneous cluster where each node has one or more Graphical Unit Processors (GPUs). The motivation of the work is the fact that this technology presents very impressive results in High Performance Computing at …
November 8, 2011 by hgpu
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